Feeder



Oct. 5, 1943. K. w. DILLMAN 2,331,110

FEEDER Filed July 3l, 1940 5 Shee'ts-Sheet l e114 Jeu@ Oct. 5, 1943.

Filed July C51, 1940 A3 Sheets-Sheet 2 Oct. 5, 1943. K. w. DILLMANFEEDER Filed July 3l, 1940 5 Sheets-Sheet Patented ct. 5, 1943 f2,331,11Gj

stem;

59 by the scrapers 'Ill is directed by the trough pieces 83 into alateral glue catch pan 5|, which is sloped to the left in Fig. 3, and isprovided with an outlet |09 directed into a sump tank I I. The sump tankhas a return connection |I3 with the pump 35, so that circulation ofglue may be maintained. A release valve ||5 permits of draining out glueto the pan 36 when desired.

The paper, fibre, cardboard or corrugatedboard sheets, as the case maybe, are placed oneby-one upon the supporting bars II. In order to feedeach of these forward, there is provided a cross-head I2, havingadjustable lugs I3 for contacting the back edge of a sheet on the barsVII. This cross-head I2 rides on rails |53. Each sheet is guided on itssides by guides 48.

In order to reciprocate the cross-head I2, it is provided with a pair ofconnecting rods I4 which extend forward to a pair of crank arms I IIlocked on a rocker shaft I8. A weight |29 carried on a forwardlydirected arm II9 serves normally to bias the shaft I8 clockwise (Fig. l)to force the cross head I2 into its rearward or return position. This isaccomplished through the linkage III, It.

A drag link 38 is also pinned to the arm ||1 adjacent to the weight |29(see the upper side of Fig. 2). This link 38 extends forward where itcarries a cross-head 25, in which is a vertical adjustable contact bar42'I. The cross-head 2G has a lug |2| which, for support, slides upon afixed rail |23, but which may be lifted clear of the rail whennecessary, as will appear.

The adjustable bar 2'I of cross-head 26 is in the path of, and in duetime is driven by, the next one of a series of lugs 2| carried upon oneof the advancing slats 39. The end of the drag link 38 is beveled asshown at |25 for Contact with a stationary cam or lug 28 when the draglink 38 is drawn forward a suitable distance by the lug 2 I. Y .n

In view of the above, operation of onevphase of the invention is asfollows: Y

Normally the cross-head I2 is in its `return position shown in Fig. 2,due to the action' of the weight 29. This places the stops I3 inretracted position. A sheet is placed ahead of the stops and between theguides 118. Then, as the next lug 2| on a slat 39 engages the contactrod 2'I of the cross-head 26, the lcross-head is" driven forward. Thelug I2| of the c ro'ss-headatvthis time rides forward upon the rail`|23. l The drag link 38 is then pulled forward, thus rotating the shaftI8 and crank arms II'I. This draws forward the cross-head I2 by way ofthe connecting rods |4, and the sheet is pushed by its rear engagementedge toward the rollers 55, 59. n

After suitable movement, the beveled end contacts the xed lug 28(whichfhowever is adjustable on the fixed rail |23). This contact liftsthe cross-head 29,`with its contact bar 2l, clear of the dog 2|, so thatthe weight 20 is then effective to return the linkage I9, II'I, |4, I2to its rearward position as shown in Fig. 2. 1 Thus the forward edge ofthe sheet has been placedin a position to be received between therollers 55 and the glue rollers 59. The sheet is thus fed forward` whilereceiving streaks of glue as described in said patent. The dog 2| passesVon under Athe raised bar 21 as the latter returns over the dog.

After the sheet has passed through the rollers, it must traverse a spacebetween the rollers and the travelling bed of slats 39. In orderautomatically to bring the rear edge of each sheet after it has passedthrough the rolls into position to be engaged by suitable lugs used inassociation with the slats 39 and as described in said patent foradvancing the sheets, the following mechanism is provided:

This consists in crank arms 22 oscillating on and with shaft 24 andarticulated at |21 with grab bars I1. These bars are twisted at |29 tobring their long dimensions atwise, so that they are more or lessspringing. Each carries at its rearward end a claw I3| which in therearward positions of the bar |I are located behind the edge of a sheetwhich has gone substantially through the rollers 55 and 59. The clawsare so beveled that when a sheet is forced forwardly with respect to aclaw, the claw rises and permits the sheet to ride under it, but afterthe rear edge of the sheet has passed the claw, the claw dropsdownlbehind the sheet to hook or grab behind it.

Eachl claw is over one of a group of supporting bars 85 which extendfrom the plane of the bars I I to near the plane of the upper reach ofslats 39. The bars 85 are staggered with respect to pairs of rollers55,59. At their forward ends, the bars 85 are depressed so that theydeliver the sheets substantially into a plane just above the slats 39.The grab bars I1 are also cross-connected by a bar I6 adjustably held atslots |33* by adjustable brackets 40. The bar I6 rides upon lateralstationary guide bars I5 hung from cross bars I9 and frame 30, whichcauses the claws |3| to follow down the sloping bars 85 to follow anddrive the rear edges of the sheets. Bar I6 is in effect anothercross-head.

Reciprocation of the bars I`I is accomplished by oscillating the shaft24. The mechanism for this consists of a bell crank on shaft 24, one arm|31 of which carries a weight 23, and the other arm |39 of'which ispinned at IGI to a second drag link |55. The arm |39 is the same lengthas arm 22 and is directly behind it, in Fig. 1. The dragr link carries across-head |40 which also rides upon the stationary guide or track |23.The cross-head carries an adjustable contact bar 29 also adapted to beengaged by the dog 2|. An extension 3| carries a beveled por- 1 tion Ii3 for cooperation with vlug 32 adjustably fastened to the track |23.Operation of this part of the invention is as follows:

After.y the travelling dog 2| has brought about a feeding action bycontact with the member 21 of cross-head 23 and the linkage 3 8, II'I,I4, I2 has operated, the cam 23 trips the cross-head 26 up out of thepath of the dog 2|. The dog 2| then proceeds next to contact with theadjustable bar 29 of the cross-head II, to carry i forward the linkage|55, |39, rotation of shaft 24, arms 22, grab links I1 and claws |3|.The claws |3| are at this time behind the rear edge of the sheet whichit has advanced practically from between the rollers 55, 59. The actionstated pushes the sheets forward from the rollers, down the bars and onto the slats 39, until the extension 3| trips on the lug 32, to raisethe cross-head |4| from the guide |23. This clears the bar 29 for returnover the dog 2| as the dog proceeds, so that the weight 23 returns thislinkage to its rearward position ready for the next sheet.y .j Q 'i Itis clear that the apparatus is` readily timed by adjustments ofthespacing of dogs 2| and of the positions of lugs`28, 32, and bars 21and 23.`

The term glue is used in the following claims in a sense generic to anysuitable adhesive.

The claws I3I and the stops 3 may both be designated as pushers whichlare operative upon other advantageous reults atti-'n' A asesino:

the reanedge' of a sheet asit advancesoverthev platfernr constitutedtheibars'- H1.' 'andi 85g In: Viewr4 of the .above,-it' willseenfthatthe several objects of the invention are' ach'eved andiAfsmanyvfehan-ges "Gomdffbemade the abete@ constructions` withoutrdepart-ing Vfrlom'- the scope ofthe invention, it is intended 'that airmatter contained"in -the--above description or-"shpwn* in the'Vaecompanying'J drawings shall'be in erp'retedf' =sew-- as `illustrativeand; notl in: aflimitingv-.se

pela-imp: 1 iv s l. A' sheet vfeedert forfce'eperatively"lmev Sheet'sdirectly 'toand"i from* continuously drivin entered therebetween,aiconveyornieving awayl direciprpcatingme'ans ;forfrnovinglthefsheet--fointhe rollers` to saidJ cenve'yorf asiat-hej sheet s released 1 fromjthey lrelle'rs:ferret:eiviiig;l the:4 sheet,

by-the roller l driving* rfol-lers 'wl'iic'li` rollers 'areflocatedat' aixed center' distance from earch other for grips pingfsheets; asupplyf;platform4 adiacent'td the rollers,1 reciprocatingmeansiorfdriving a sheet ir'itojposition11o-@tbeJ grippedl and; drivenby the return off: the pusher connection;

ati'vely" moving! `Smets tot coating rollers, l

porting:sheetsferfguidance toward' tnernilers; re-f demeaning means ferlpressing the rear edgev a sheet thaiitha for' 'ifciiedge-is-forced-1beetweenttne mums, 'meanslrnormaiiyf biasing santy i reeiprotatingmean-sltotaal `-starting position 'af-ten parti'alI entry o'i thesheetf' between' the rolle-rs; a

conveyor 'for' receivingft ei sheet from l.theI rollers; andtimingmeansmovable with the conveyor for-r operating-"the reciprocating meansa predeter- 'il In:l ai sheetk feeding apparatus 'ferA cooper-l`atively-movin" f sheets=1to coating rollers, :power l means forffthefrollrs'# whereby; sheets direeted roilersl andtcbe driven therethroughonly whenv entered therebetween,a Vconvey-or yspaced :from

` and' moving" away fromthe-rollers,fonreceiving the sheet, andreciprocatingmeans for reaching to the*edgeofthesheet-as--it leaves therollers to draw it out over the spacing between the rollers andtheconveyor and move it onto the con- 3. A sheet feeder forcooperativelymoving sheets to and from coating rollers, comprising a supply meansadjacent to the rollers, reciproeating means for driving a sheet intoposition to be caughtby the rollers tobev driven therethrough, aconveyor moving away from the rollers for receiving the sheet,reciprocating means for moving the sheet from the rollers to saidconveyor, and means movable with the conveyor for driving both of saidreciprocating means sequentially.

4. A sheet feeder comprising rollers, recprocating means for driving asheet into position to be caught by the rollers to be advanced thereby,a conveyor spaced from and moving away from the rollers for receivingthe sheet, reciprocating means for moving the sheet from the rollers tosaid conveyor, and spaced timing lugs movable with the conveyor fordriving said reciprocating means sequentially. Y`

5. A sheet feeder comprising "rollers, reciprocating means for driving asheet into position to be caught by the rollers to be advanced thereby,a conveyor spaced iromand moving away rom the rollers for receivingthefsheet, reciprocating means for movingth'e sheet from the rollers tosaid conveyor, and spaced timing` lugs movable with the conveyor fordriving said reciprocating means sequentially, each reciprocating meanscomprising a pusher, a drag link, aconnection from the pusher to thedrag link normally biased to starting position, contact meanstherebetween are driven. forward, means for supportingi'sheets! for'guidanceI toward the rollers, reciprocating means for pressing the rear`edge cff'fa'sheetsovthat the forwardledge' forced bel f tweenthe:rollers;y m'eansnormally biasing` said? j reciprocatingfmeanstoaistartingpesition, arson-l ve'yorifor"receiving the sheet from thetrollers,

timing meansinovablewith the' conveyor forfop-KV erating thereciprocating means alpredetermined ameunt` to force said sheet Abetween the rollers, andi .means fon releasingt'hereciprocatingmeansifromtheftimingfm'eanson" the conveyor after a predetermined-amountof/.fmovement so=thatsaid- 'biasing meansmay, return` the reciprocating`mean'stdjstartingi position;

821 India sheet"ffeediiig'V apparatus: for 'cooperativelyfmovingslieetsltoandf-rom coatingfrollers, power means, fon the pressure:rollers whereby sheets.dir.ected therebetween 1 are driven forward;

means for supporting sheets for guidance toward f the rollers,reciprocating means for pressing the rear edge of a sheet so`that theforward edge is forced between the rollers, means normally .biasing saidreciprocating meansto a starting Vposition, a conveyor for receiving thesheet from the Y rollers, timing means movable with the conveyor foroperating the reciprocating means a predetenmined amount to force Vsaidsheet between the rollers, means for releasingv the reciprocating meansfrom the timing means on the ,conveyor after a predetermined amount ofmovement so thatsad biasing meansy may return the reciprof eating meansto starting position,r a second reciprocating means biasedtoy a startingposition including means for pressing the rear edge of the sheet fromthe rollers totheconveyor, saidtiming means sequentially operating thesecond reciprocating means, and means for releasing thel secondreciprocating means from the timing means for biased return.

9. In a sheet feeding means for cooperatively,y

- moving sheets to and from coating rollers-guiding support means forthe sheet, reciprocating means for starting the sheet toward the rollersfor subsequent driving therethrough, said reciprocating means beingoperative upon the rear edge of the sheet, reciprocating `means formoving the' sheet from thefrollers'and operative upon Y said edge, .aconveyormovable away from `the rollers, said last-named reciprocatingmeans moving said sheet toward the conveyor, means for biasing saidreciprocatin means to. their starting'positions, and means'movable withthe v Y' U conveyor and `cooperating successively with vsaid on eachdrag link engaged by the lugs, and a re'-,

vreciprocating means to operate them to'feed a sheet into and'from therollers respectively.

Vmeans being operative upon the rear 10.' In a sheet feeding means forcooperatively moving sheets to and from coating rollers, the rollersbeing adaptedto move an applied sheet, guiding support means for thesheet, reciprocating means for starting the sheet toward theroll-` ersfor subsequent movement, said reciprocating edge of the sheet,reciprocating means for moving the sheet from the rollers and operativeupon said edge, a conveyor movable away from the rollers, saidlast-named reciprocating means moving said sheet toward the conveyor,means for biasing both of said reciprocating means to their startingpositions, and spaced individual means movable with the conveyor andeach cooperating successively with said reciprocating means to actuatethem to feed sheets int-o and from the rollers, the biasing return-means being operative between actuations by said means on the conveyor.

11. In a sheet feeding means for cooperatively moving sheets to and fromcoating rollers, the rollers being adapted to move an applied sheet,lguiding support lrneans for the sheet, reciprocating means for startingthe sheet toward the rollers for subsequent driving therethrough, saidreciprocating means being operative upon the rear edge of the sheet,reciprocating means for moving the sheet from the rollers and operativeupon said edge, a conveyor movable away from the rollers, saidlast-named reciprocating means moving said sheet toward the conveyor,means for biasing said reciprocating means to their starting positions,spaced individual means movable with the conveyor and cooperatingsuccessively with said reciprocating means to operate them to feed asheet into and from the rollers, means for releasing the respectivereciprocating means after temporary operation by said operating means onthe conveyor, and independent biasing means for returning the respectivereciprocating means to their starting positions as they are released. Y

12. A sheet feeder comprising rollers, a sheet support adjacent one sideof the rollers, a conveyor moving away from the rollers on their othersides, reciprocating pushers for starting the sheets .toward therollers, the rollers feeding the sheets therethrough after starting,reciprocating pushers for pressing the sheets from the rollers on theother side and delivering them to said conveyor, and timing means on theconveyor for operating said reciprocating means successively to startthe sheets and thereafter to withdraw them from the rollers and movevthem to said conveyor.

13. A sheet feeder comprising rollers, la. sheet support adjacent oneside of the rollers, a. conveyor moving away from the rollers on theirother side, said sheet support having a sloping extension to theconveyor, reciprocating means Vfor starting the sheets toward therollers from the support, the rollers feeding the sheets therethroughafter starting and down the extension, reciprocating pusher means forwithdrawing the sheets from therollers on the other side and deliveringthem to said conveyor over said extension, timing means on the conveyorfor operating said reciprocating means successively to start the sheetsand thereafter to withdraw them from the rollers and move them to saidconveyor, andl guide means for the second reciprocating means to causethe said reciprocating pusher means to move along said slopingextension.

KENNE'I'I W. DILLMAN.

